There are a few other things wrong (we need to use Maemo banners, not dialogue boxes; the vibration at the end needs reimplementing) but I think it will be good to go in a week or so of snatched moments here and there. If you'd like to test, let me know.

(I'm thinking of making the title page dark grey, and losing the text across the top, to look more Maemo-like than MeeGo-like.)

Looking good. Maybe you can do the vibration using Qt Mobility 1.1's Feedback API? The rectangles in-game with the grey/white border are used to control the robot, right? Have you thought about an on-screen analog stick that appears when the user touches the screen or (alternatively) cursor keys in the lower right corner of the screen? For an analog stick example, check this out: http://www.youtube.com/watch?v=LGvAPD7XBV4#t=41s